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Southwest Highlands

Confidence

High for this changeable weather pattern to continue during first half of the week then for high pressure to bring more settled conditions later in the week.

  • Monday
  • Tuesday
  • Further outlook

Monday 18 June 2018

Weather hazards

Gales High likelihood Hide detail

Gale force winds (gusts over 50mph) make walking difficult and strenuous with a potential to be blown over by gusts. There is often a marked increase in winds through cols or on exposed ridges and summits. Distances can take longer to cover and compass bearings become harder to follow accurately.

Severe chill effect Low likelihood Show detail

Wind significantly lowers the ‘feels-like’ temperature relative to the actual temperature, with even moderate winds significantly adding to the chilling effect. Strong winds can result in a severe and debilitating wind chill many degrees below the actual temperature. This effect will be enhanced in rain or wet snow. Without protection, prolonged exposure could result in frost nip or frostbite on exposed parts of the body and/or hypothermia.

Poor visibility Low likelihood Show detail

Poor visibility presents challenging route finding conditions. Visibility could be significantly less than 50 metres in all directions with few or no visual references, especially on featureless moors or plateaux. Distances become hard to judge and cliff or cornice edges can be difficult to recognise. These conditions require good navigational skills. There is a risk of white-out conditions when mist or fog is combined with extensive snow cover.

Strong sunlight Low likelihood Show detail

Harmful UV levels from sunlight increase with altitude giving a greater risk of sunburn and eye damage, even on some overcast days. On breezy days, the cooling effect of wind on exposed skin may disguise any feeling of sunburn until it is too late. If there is snow cover, glare increases the effect of UV rays especially on the eyes. It is advisable to wear sun block, protective clothing such as a long-sleeved top and hat and have good quality eye protection.

Headline

Mainly dry, bright morning. Patchy rain during afternoon. Windy.

Weather at 800m

06:00 09:00 12:00 15:00 18:00 21:00
Sunny intervals Cloudy Cloudy Light rain Light rain Cloudy
20% 20% 20% 40% 30% 20%
Chance of precipitation
1,400 1,500 1,500 1,500 1,300 1,200
Freezing level (m)
The level above which snow is expected to settle or the ground is expected to be frozen

Wind speed and direction (mph) By altitude above mean sea level

06:00 09:00 12:00 15:00 18:00 21:00
1300m SW 36 44 SW 36 44 SW 40 52 SW 44 57 SW 42 54 SW 37 48
900m SW 27 34 SW 28 35 SW 33 44 SW 36 47 W 35 46 W 30 40
600m SW 31 39 SW 30 38 SW 32 44 SW 34 46 SW 30 41 SW 26 37
300m SW 14 20 SW 17 27 SW 18 33 SW 19 35 SW 17 32 SW 13 25
Glen SW 9 20 SW 12 25 SW 14 34 SW 14 35 SW 13 33 SW 10 27

Temperature (°C) By altitude above mean sea level

06:00 09:00 12:00 15:00 18:00 21:00
1300m 2 1 2 2 1 0
900m 4 5 5 5 4 3
600m 6 7 8 8 7 6
300m 9 10 10 10 9 8
Glen 12 13 13 13 12 11

Feels like temperature (°C) By altitude above mean sea level

06:00 09:00 12:00 15:00 18:00 21:00
1300m -6 -7 -7 -6 -8 -9
900m -2 -1 -1 -1 -3 -4
600m 1 1 2 2 1 0
300m 6 6 7 6 6 5
Glen 10 11 11 10 10 9
Sunrise: 04:29   Sunset: 22:12
Moon phase: Waxing crescent

Weather

Monday morning will remain mostly dry with some sunshine at first then gradually clouding over. Cloudy skies for the afternoon with patchy light rain extending to many ranges for a time. Dry, sunny weather following during the evening.

Chance of cloud-free mountain/hill tops at 800m

80% decreasing to 30% in the afternoon, improving again during the early evening. Occasional cloud cover in the morning around 800m will become more extensive during the afternoon at around 600 to 700m, lifting and breaking again during the evening. .

Visibility

Generally very good but patches of moderate or poor visibility during afternoon.

Met Office Aberdeen meteorologist's view

Note the combination of gales on the tops and temperatures only a few degrees above freezing will result in a significant chill effect. Also gales over higher ridges and summits will make walking conditions difficult.

Tuesday 19 June 2018

Sunrise: 04:29   Sunset: 22:12
Moon phase: Waxing crescent

Weather

Dry and bright for much of the day with sunny spells. Just a few showers at first in west soon dying out. It will become cloudy during the afternoon with more persistent rain spreading in during the late afternoon and evening.

Maximum wind speed expected

Westerly winds with average speeds of 30mph gusts 50 at first decreasing 15mph during afternoon and evening.

Chance of cloud-free mountain/hill tops at 800m

80% reducing 30% during late afternoon and evening. Patchy cloud cover around 800m becoming extensive and lowering 600 to 700m later in the day..

Temperature

  • At 800m Plus 4 Celsius rising to 7 Celsius.
  • Glen Plus 9 Celsius rising to 17 Celsius.
  • Freezing level Above the summits.

Visibility

Very good becoming moderate or poor as rain sets in.

Wednesday 20 June 2018

Sunrise: 04:29   Sunset: 22:12
Moon phase: First quarter

Cloudy with outbreaks of rain at first then drier and brighter in the afternoon with sunny spells and scattered showers. Stengthening northwesterly winds on the tops and feeling bitterly cold.

Thursday 21 June 2018

Sunrise: 04:29   Sunset: 22:13
Moon phase: First quarter

Another cold, windy day in the hills with strong to gale force northwesterly winds. Otherwise a bright day with sunny spells and a few showers.

Friday 22 June 2018

Sunrise: 04:29   Sunset: 22:13
Moon phase: First quarter

Mainly dry with sunny spells. Strong northwesterly winds on the tops but easing a little during the day.

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